Sergiusz, a teenager at a technical school, is misunderstood by his family and bullied by his peers because of his passion for fantasy and LARP games. In the incredible world of imagination and adventures marked by sword and sorcery, he is a true hero – masculine, brave, and invincible. In the real world, not so much.

Second half of the 1970s. A few teenagers from the town of Ustrzyki Dolne, led by a charismatic and undisciplined student of the local school, Siczka, decided to become punks and get into punk rock and start a band called KSU.